I am not sure why but one of our Resin 4.0.20 instance is having problem staring up. It seems to be in infinite loop of restarting. Enclosed are resin.xml and the log files. We are getting a NullPointerException at startup and Resin is now in an infinite loop of restarts.

[2011-08-03 16:40:14.941] java.lang.NullPointerException
at com.caucho.env.git.GitSystem.getTag(GitSystem.java:166)
at com.caucho.env.repository.FileRepository.getRepositoryRootHash(FileRepository.java:129)
at com.caucho.env.repository.FileRepository.checkForUpdate(FileRepository.java:74)
at com.caucho.env.repository.AbstractRepository.start(AbstractRepository.java:84)
at com.caucho.env.repository.LocalRepositoryService.start(LocalRepositoryService.java:91)
at com.caucho.env.service.ResinSystem.startServices(ResinSystem.java:515)
at com.caucho.env.service.ResinSystem.start(ResinSystem.java:483)
at com.caucho.server.resin.Resin.start(Resin.java:1029)
at com.caucho.server.resin.Resin.initMain(Resin.java:1156)
at com.caucho.server.resin.Resin.main(Resin.java:1458)

The problem persists even if we stop and start the instance. Any idea what's going on? This problem is only happening with this one particular instance.